Basaltic Trachyandesite vs Phyllite Tekstur
tektur
glassy, massive, porphyritic, scoriaceous, vesicular
Sheen phyllitic, slaty
werna
ireng, coklat, cahya kanggo werna abu-abu peteng
ireng kanggo werna abu-abu, klawu rodok ijo cahya
katon
kurang lan alus
crinkled utawa wavy